Description

Sometimes during reboot of the guest OS, VirtualBox does not complete the 'RESETTING' state, it just freeze. This problem accrues more often on the more faster HP ProLiant DL360 G7 that uses VirtualBox 4.1.18. The Vbox.log has not been modified.

A core dump should help debugging this problem. When your VM is at the state where you can't shut it down or reset then do 'kill -4' to the VBoxHeadless PID (make sure to have the core dump capability before). The kill command will force the VM process to terminate. If you have a core dump, please contact me via email at frank _dot_ mehnert _at_ oracle _dot_ com. Please also provide the corresponding VBox.log file in that case.

Thanks for the core dump. For some reason it is hard to get sensible information out of the dump despite the fact that I have debug information available for the VBox package. Is your Ubuntu 11.04 distribution up-to-date?

Its hard to test a bug that appears sometimes but the testing I have done so far shows that the bug is solved. The VMMs does not freeze anymore during reboot. Thanks a lot for the support and the quick fix.

Summary
changed from VBoxHeadless stops respond during "Changing the VM state from 'RUNNING' to 'RESETTING'." to VBoxHeadless stops respond during "Changing the VM state from 'RUNNING' to 'RESETTING'." => Fixed in SVN